If the entry doesn't have its own URL, then write_entry() will use the directory's URL to determine the location of the entry. Bugfix: if the directory is the root, then our *relative* repository path is "" rather than the absolute URL of the repository.
If the entry doesn't have its own URL, then write_entry() will use the
directory's URL to determine the location of the entry. Bugfix: if the
directory is the root, then our *relative* repository path is "" rather
than the absolute URL of the repository.

* subversion/libsvn_wc/entries.c:
  (write_entry): use "" for the relpath root, rather than the full url.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@876299 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion